The effects of a bad reputation
ראובן בכור ישראל בני ראובן חנוך משפחת החנכי לפלוא משפחת הפלאי
[Regarding] Reuven, the first born of Israel: The sons of Reuven are Chanoch, [who has] the Chanoch family, Palu, who has the Palu family.
After a terrible plague that badly affected the Jews in the wilderness, Hashem commanded Moshe to take a census of the people. This is similar to a shepherd who counts his sheep after a wolf attacked the flock; he desires to know how many remain. The Torah expends the effort to list every tribe, as well as every family in that tribe, as it tallies up the totals. However, the Torah does this in an unusual way. Every family that is listed has the letter ה preceding it and the letter י following it. For example, one of the sons of Reuven is Chanoch. When the Torah mentions the family of Chanoch, it calls them mishpachas HaChanochi. For his other son Palu it says mishpachas HaPalui. Why does the Torah do this, not only for this family, but every family mentioned?